He was a Navy officer, a conservative democrat, and perhaps the last candidate of that party to ever have honor. "Ask not what your country should do for you--ask what you should do for your country." Pelosi, Shumer and the legions of current democrats wouldn't even know what that means.
As one who witnessed his candidacy, election, presidency, and funeral--I far would rather have seen a second term and a statesmanlike retirement.
RIP JFK.
An interesting President, most of his policies would be considered conservative today.